In 2013 LEGO released 2 Power Functions sets. The current estimated value of all these Power Functions sets from this year is about $113.62 which represents a 291.5% growth.
Power Functions is a TECHNIC electric building system that consists of remote control units, power units, motors, lights and receivers that can be connected by cables with brick-shaped connectors. The core battery boxes deliver the power to different types of motors to make things move, light, remote control and even connection to a computer. Everything fits together in a system to let you build and control LEGO sets and inventions. The system was released in 2007
2013 LEGO Sets
2013 included a number of notable theme releases including the Legends of Chima, The Lone Ranger, Galaxy Squad, Teenage Mutant Ninja Turtles, Jake and the Never Land Pirates and Mickey Mouse & Friends. The flagship release was Legends of Chima with the coincided premier of The Legends of Chima TV Show on Cartoon Network. However, LEGO unfortunately did retire a number of well-loved themes such as Monster Fighters, SpongeBob SquarePants, Cars and Dino. One interesting note is that in 2013, LEGO started changing from 4-digit set numbers to 5-digit set numbers. 2013 was also the year that LEGO release the exclusive Mr. Gold in its collectable minifigures blind bags. This event single handled created one of the greatest investment opportunities for collections LEGO has seen.